readme: reference doc on developers.google.com instead of duplicating it.

Conflicts:
	README.md

README.md

@@ -19,90 +19,15 @@ optimizations, see our <a href="http://ngxpagespeed.com">demonstration site</a>.
 
 ## How to build
 
-Because nginx does not support dynamic loading of modules, you need to compile
-nginx from source to add ngx_pagespeed. Alternatively, if you're using Tengine you can [install ngx_pagespeed without
-recompiling Tengine](https://github.com/pagespeed/ngx_pagespeed/wiki/Using-ngx_pagespeed-with-Tengine).
-
-1. Install dependencies:
-
-   ```bash
-   # These are for RedHat, CentOS, and Fedora.
-   $ sudo yum install gcc-c++ pcre-dev pcre-devel zlib-devel make
-
-   # These are for Debian. Ubuntu will be similar.
-   $ sudo apt-get install build-essential zlib1g-dev libpcre3 libpcre3-dev
-   ```
-
-2. Download ngx_pagespeed:
-
-   ```bash
-   $ cd ~
-   $ wget https://github.com/pagespeed/ngx_pagespeed/archive/v1.8.31.4-beta.zip
-   $ unzip v1.8.31.4-beta.zip # or unzip v1.8.31.4-beta
-   $ cd ngx_pagespeed-1.8.31.4-beta/
-   $ wget https://dl.google.com/dl/page-speed/psol/1.8.31.4.tar.gz
-   $ tar -xzvf 1.8.31.4.tar.gz # expands to psol/
-   ```
-
-3. Download and build nginx:
-
-   ```bash
-   $ cd ~
-   $ # check http://nginx.org/en/download.html for the latest version
-   $ wget http://nginx.org/download/nginx-1.6.0.tar.gz
-   $ tar -xvzf nginx-1.6.0.tar.gz
-   $ cd nginx-1.6.0/
-   $ ./configure --add-module=$HOME/ngx_pagespeed-1.8.31.4-beta
-   $ make
-   $ sudo make install
-   ```
-
-If this doesn't work see the [build
-troubleshooting](https://github.com/pagespeed/ngx_pagespeed/wiki/Build-Troubleshooting) page.
-
-This will use a binary PageSpeed Optimization Library, but it's also possible to
-[build PSOL from
-source](https://github.com/pagespeed/ngx_pagespeed/wiki/Building-PSOL-From-Source).
-
-Note: ngx_pagespeed currently doesn't support Windows or MacOS because the
-underlying PSOL library doesn't.
+Follow the steps on <a
+href="https://developers.google.com/speed/pagespeed/module/build_ngx_pagespeed_from_source">build
+ngx_pagespeed from source</a>.
 
 ## How to use
 
-In your `nginx.conf`, add to the main or server block:
-
-```nginx
-pagespeed on;
-pagespeed FileCachePath /var/ngx_pagespeed_cache;  # Use tmpfs for best results.
-```
-
-In every server block where pagespeed is enabled add:
-
-```apache
-#  Ensure requests for pagespeed optimized resources go to the pagespeed
-#  handler and no extraneous headers get set.
-location ~ "\.pagespeed\.([a-z]\.)?[a-z]{2}\.[^.]{10}\.[^.]+" { add_header "" ""; }
-location ~ "^/pagespeed_static/" { }
-location ~ "^/ngx_pagespeed_beacon$" { }
-```
-
-To confirm that the module is loaded, fetch a page and check that you see the
-`X-Page-Speed` header:
-
-```bash
-$ curl -I 'http://localhost:8050/some_page/' | grep X-Page-Speed
-X-Page-Speed: 1.8.31.4-...
-```
-
-Looking at the source of a few pages you should see various changes, such as
-urls being replaced with new ones like `yellow.css.pagespeed.ce.lzJ8VcVi1l.css`.
-
-For complete documentation, see [Using
-PageSpeed](https://developers.google.com/speed/pagespeed/module/using).
-
-There are extensive system tests which cover most of ngx_pagespeed's
-functionality.  Consider [testing your
-installation](https://github.com/pagespeed/ngx_pagespeed/wiki/Testing).
+Follow the steps on <a
+href="https://developers.google.com/speed/pagespeed/module/configuration">PageSpeed
+configuration</a>.
 
 For feedback, questions, and to follow
 the progress of the project:
@@ -111,20 +36,3 @@ the progress of the project:
   list](https://groups.google.com/forum/#!forum/ngx-pagespeed-discuss)
 - [ngx-pagespeed-announce mailing
   list](https://groups.google.com/forum/#!forum/ngx-pagespeed-announce)
-
-Note: The
-[canonicalize_javascript_libraries](https://developers.google.com/speed/pagespeed/module/filter-canonicalize-js)
-depends on `pagespeed_libraries.conf` which is distributed in Apache's format.
-To convert it to the Nginx format, run:
-
-```bash
-$ scripts/pagespeed_libraries_generator.sh > ~/pagespeed_libraries.conf
-$ sudo mv ~/pagespeed_libraries.conf /etc/nginx/
-```
-
-And then include it in your Nginx configuration by reference:
-
-```nginx
-include pagespeed_libraries.conf;
-pagespeed EnableFilters canonicalize_javascript_libraries;
-```